If f(x) = -x² + 6x - 1 and g(x) = 3x² - 4x - 1, find (f + g)(x).
1) (1 + g)(x) = 2x² - 10x
2) (f + g)(x) = 2x² + 2x - 2
3) (f + 9)(x) = -4x² + 10x
4) (f + g)(x) = 4x + 10x + 2